FR3061340A1 - MULTI-FREQUENCY DEVICE, CONTROL AND / OR CONTROL DEVICE, DOMOTIC EQUIPMENT AND MULTIFREQUENCY ASSOCIATED SYSTEM - Google Patents

Abstract

This multifrequency device (10) is configured to be connected by at least two conductors (121, 122) to a power supply network (11). This device comprises at least one radiofrequency module (13) comprising at least a first and a second input / output port (131, 132), able to transmit and / or receive radio frequency signals on two different frequencies, at least two circuits of tuning (14, 15) configured to block the propagation of radio frequency signals propagating on the conductors, each tuning circuit comprising a plurality of terminals. A terminal (141, 151) of each tuning circuit is connected to the first conductor or the second conductor. A terminal (142, 151) of each tuning circuit is connected to the first input / output port or the second input / output port of the radio frequency module. This device also comprises decoupling means (C1, C2) configured to stop the propagation of electrical supply signals between the conductors and between at least one conductor and an input / output port of the radiofrequency module.

Description

Holder (s): trusted.

SOMFY SAS Société par actions simpliO Extension request (s):

(® Agent (s): LAVOIX.

(54) MULTI-FREQUENCY DEVICE, COMMAND AND / OR CONTROL DEVICE, HOME AUTOMATION EQUIPMENT AND RELATED MULTI-FREQUENCY SYSTEM.

FR 3 061 340 - A1 (5?) This multi-frequency device (10) is configured to be connected by at least two conductors (121, 122) to an electrical supply network (11). This device comprises at least one radiofrequency module (13) comprising at least first and second input / output ports (131, 132), capable of transmitting and / or receiving radiofrequency signals on two different frequencies, at least two circuits of tuning (14, 15) configured to block the propagation of radiofrequency signals propagating over the conductors, each tuning circuit comprising several terminals. A terminal (141,151) of each tuning circuit is connected to the first conductor or to the second conductor. A terminal (142, 151) of each tuning circuit is connected to the first input / output port or to the second input / output port of the radio frequency module. This device also includes decoupling means (C 1, C2) configured to stop the propagation of electrical supply signals between the conductors and between at least one conductor and an input / output port of the radio frequency module.

Multi-frequency device, command and / or control device, home automation equipment and associated multi-frequency system

The present invention relates to the field of radio frequency transmission, that is to say radio signals. The invention relates more particularly to a multi-frequency device, a multi-frequency control device, home automation equipment and an associated radio frequency system.

The invention can find an application in the field of home automation and more particularly in that of remote control and / or control by radio frequencies. It can, for example, find use in the building sector, in order to control and / or control one or more actuators configured to control at least one electrical load. This electrical charge can be intended, for example, for thermal, visual or light comfort, for sun protection, for closing or for the security of a building or its surroundings.

Such actuators may include a receiving radio frequency module to receive instructional radio signals from a remote control device. According to an alternative embodiment, these actuators may include a radio frequency transmission / reception module in order to exchange radio signals with a remote control device. These remote control devices can be, for example, a remote control, a smart phone (or “smartphone” according to English terminology), a multi-service box (or “box” according to English terminology) or any other equivalent device. It can be a nomadic or fixed radiofrequency transmitter.

The radio frequency module comprises at least one antenna in order to increase the sensitivity and therefore the range of the transmission between the transmitter, respectively the receiver, of the remote control device and the receiver, respectively the transmitter, of the radio frequency module.

In some embodiments, the actuator is arranged in a metal casing, which makes it necessary to move the antenna outside of this metal casing to preserve the sensitivity. However, this solution is not very aesthetic. In addition, when the antenna is made in the form of an electric wire, an installer seeing an unconnected wire may be tempted to cut it thinking that this wire is not used.

It is known to use a conductor of a mains supply cable of a radio frequency module to form a part of the antenna of this module, either by direct coupling or by partial coupling. For convenience and safety reasons, the conductor used is generally the neutral conductor. A problem arises when it is desired to make a device using at least two different frequencies to transmit and / or receive radio frequency signals. In this case, several antennas are necessary and the use of the mains supply cable as an antenna would require the use of at least one phase conductor. Due to the voltage of the power supply network, namely 330V peak or 170V peak depending on the country, the use of a phase conductor connected to the electrical network would not be without risk for electrical components and users.

An object of the invention is in particular to correct all or part of the aforementioned drawbacks by proposing a multifrequency device capable of receiving and / or transmitting radioelectric signals on several different frequencies and using a mains cable as antenna. The invention also aims to provide a multifrequency control device, home automation equipment and an associated radiofrequency system.

To this end, the subject of the invention is a multifrequency device configured to be connected by at least first and second conductors to an electrical supply network, the device comprising:

at least one radiofrequency module comprising at least a first and a second input / output port, the first input / output port being able to transmit and / or receive radiofrequency signals on a first frequency, the second input / output port being able to transmit and / or receive radio frequency signals on a second frequency distinct from the first frequency,

- at least a first and a second tuning circuit configured to block the propagation of radiofrequency signals propagating respectively on the first and the second conductor, each tuning circuit comprising a plurality of terminals,

- a terminal of each tuning circuit being connected respectively to the first conductor or to the second conductor,

- one terminal of each tuning circuit being connected respectively to the first input / output port or to the second input / output port of the radio frequency module,

- decoupling means configured to stop the propagation of electrical supply signals between the first and second conductor and between at least one conductor and an input / output port of the radio frequency module.

Thanks to the invention, reception of radio signals is possible on at least two different frequencies, while the radiofrequency module is protected against current surges from the power supply network.

According to advantageous but not compulsory aspects of the invention, such a multifrequency device can incorporate one or more of the following characteristics taken in any technically admissible combination:

- The first tuning circuit comprises at least three terminals, a first terminal of the first tuning circuit being connected to the first conductor, a second terminal of the first tuning circuit being connected to the first input / output port of the radio frequency module by l intermediary of a decoupling capacitor and a third terminal of the first tuning circuit of the tuning circuit being connected to an electrical ground of the multifrequency device via a decoupling capacitor.

- The first tuning circuit comprises, between the first and third terminals, an inductor connected in parallel with a capacitor, the second terminal of the first tuning circuit being connected at a point on the inductor located between its two ends.

- The first tuning circuit comprises, between the first and third terminals, an inductor connected in parallel with two capacitors connected in series, the second terminal of the first tuning circuit being connected to the terminal common to the two capacitors.

- The second tuning circuit is formed by a transmission line whose length is substantially equal to a quarter of the wavelength associated with the second frequency, a first terminal of the second tuning circuit being connected to a first end of the transmission line, to the second conductor and to the second input / output port of the radio frequency module and a second terminal of the tuning circuit being connected to a second end of the transmission line and to the electrical ground of the multi-frequency circuit.

- The first end of the transmission line is connected to the second input / output port of the radio frequency module via an impedance matching circuit configured to adapt the impedance of the second conductor to a value substantially equal to l input impedance of the second input / output port of the radio frequency module.

- The first tuning circuit is also configured to adapt the impedance of the first conductor to a value substantially equal to the input impedance of the first input / output port of the radio frequency module.

- The first tuning circuit includes an inductor made in the form of printed turns.

- The radio frequency module is configured to send and / or receive radio frequency signals on a single frequency.

- The radio frequency module is configured to transmit and / or receive radio frequency signals on at least two frequencies.

- The first and second conductors, connected to the power supply network are respectively a phase conductor and a neutral conductor.

- One of the conductors, connected to the power supply network, is an earth conductor.

The invention also relates to a command and / or control device by radiofrequency signals configured to supply at least one electrical charge, the command and / or control device being characterized in that it comprises at least one multifrequency device such as mentioned above and a command and / or control module.

In addition, the invention relates to home automation equipment configured to be controlled and / or regulated by radiofrequency signals, the home automation equipment being characterized in that it comprises a device for command and / or control by radiofrequency signals as mentioned above intended to command and / or control an electric charge also belonging to home automation equipment.

Finally, the invention relates to a multi-frequency system comprising a group of at least one home automation equipment as mentioned above and a group of at least one remote control and / or control device, the multi-frequency system being characterized in that the group of at least one remote control and / or control device comprises a radio frequency module configured to cooperate with at least one multifrequency device from the group of at least one home automation equipment, in order to control it and / or the control.

Other features and advantages of the present invention will appear more clearly on reading the description below, given by way of illustration and not limitation, and made with reference to the appended drawings, in which:

FIG. 1 represents an exemplary embodiment of a multi-frequency device according to the invention;

Figures 2 and 3 show examples of embodiments of a tuning circuit used in the device of Figure 1;

FIG. 4 represents an exemplary embodiment of a multifrequency command and / or control device according to the invention; and

FIG. 5 represents an exemplary embodiment of a multi-frequency system according to the invention.

FIG. 1 represents an exemplary embodiment of a multifrequency device 10 according to the invention.

The device 10 is configured to be connected to a power supply network 11, that is to say a commercial alternative network, by means of a mains cable 12. The power supply network 11, or mains , can for example be a single-phase network or a three-phase electrical network. For example, a single-phase electrical network can deliver an effective voltage of amplitude equal to approximately 230V or 120V, with a frequency of approximately 50 Hz or 60Hz. A three-phase electrical network can deliver an effective voltage of amplitude equal to approximately 380V or 230 V between each of the phase conductors and an effective voltage of amplitude equal to approximately 120V or 230 V between each phase conductor and the neutral conductor.

The power cable 12 comprises a group of at least two conductors 121, 122.

In the embodiment illustrated in FIG. 1, the power cable comprises a phase conductor 121 and a neutral conductor 122. According to an alternative embodiment, the group of at least two conductors can comprise two or three phase conductors. According to another embodiment, the power cable can include a protective conductor connected to earth. These conductors can also constitute first and second conductors, within the meaning of the invention.

Each conductor of the power cable 12 behaves like an antenna. The electrical signals propagating on one or more conductor (s) of the power cable 12 therefore comprise two components, a first low frequency component (typically of frequency 50 Hz or 60 Hz) corresponding to the electrical supply signals and a high frequency radiofrequency component. corresponding to the radio signals picked up by the power cable and propagating on the conductors of the latter.

The multifrequency device 10 comprises an electric ground GND.

The multifrequency device 10 can be either of unidirectional type, that is to say purely receiver or purely transmitter, or of bidirectional type, that is to say transmitter and receiver, or of mixed type. For this it comprises at least one radiofrequency module 13 capable of transmitting and / or receiving radiofrequency signals on at least two frequencies of different values. The radio frequency module 13 can be configured to transmit and / or receive radio frequency signals on one or more frequencies, in order to exchange radio frequency signals with another remote transmitting and / or receiving device. The radio frequency module 13 comprises at least two input / output ports 131, 132, a first input / output port 131 being configured to at least receive radio frequency signals on a first frequency, the second input / output port 132 being configured to at least receive radiofrequency signals on a second frequency distinct from the first frequency. In the case of a mixed multifrequency device, part of the input / output ports can be of the unidirectional type and another part can be of the bidirectional type.

The radio frequency module includes a control output 134 configured to transmit electrical control signals to a load not shown, such as a shutter motor not shown.

According to one embodiment, the radio frequency module 13 can include an input / output port configured to at least receive signals such as electronic signals representative of one or more state variables. According to one embodiment, this input / output can be bidirectional and can be configured to send and receive electrical signals to and from another device.

In order not to overload the figure, only the input / output ports 131, 132 of the radio frequency module 13 have been shown. The radiofrequency module includes other elements known to those skilled in the art such as a power supply device, a high frequency amplifier-demodulator circuit, one or more microcontrollers or processors and / or any other equivalent means programmed in a timely manner. As a result, the radio frequency module 13 is able to receive and decode signals representative of control commands and possibly to transmit signals representative of information.

The radio frequency module 13 comprises an electrical ground connected to the electrical ground GND of the multifrequency device 10.

The radio frequency module 13 can be supplied from the voltage delivered by the sector for example, by a power input 133 connected between an internal phase line PO and an internal neutral line NO. In this embodiment, not shown, the radio frequency module 13 can comprise an internal power supply device configured to transform the alternating voltage, for example of amplitude substantially equal to 230 V and frequency 50 Hz, delivered by the electrical network 11 into a internal voltage, for example continuous of amplitude substantially equal to 3V, usable for supplying the various electronic components of the radio frequency module

13.

According to another embodiment shown in FIG. 1, the multi-frequency device 10 can comprise a supply device 16 connected between an internal phase line PO and an internal neutral line NO and intended to supply the radio frequency module 13 with a voltage lower than that of the sector. For this, the power input 133 of the radio frequency module 13 can be connected to a power output 161 of the power device 16.

The multi-frequency device comprises a first tuning circuit 14 configured to limit the propagation of radio frequency signals on the conductor 121, 122 to which it is connected. With reference to FIGS. 2 and 3, the tuning circuit 14 comprises at least one coil and a capacitor connected in parallel forming a resonant circuit or isolation circuit (also known as a "plug circuit"). The windings and capacitor of the tuning circuit are dimensioned so that the resonant circuit is tuned to a frequency substantially equal to the frequency of the carrier signals used for radio frequency transmission.

This first tuning circuit 14 can also have a second impedance matching function. In this embodiment, the various components of this circuit 14 are also dimensioned so as to adapt the impedance of the conductor to which it is connected, seen at the level of the first input / output port 131 of the radio frequency module 13, to a value substantially equal to that of the input impedance of this first input / output port 131. The value of this impedance can for example be equal to 50 Ohms.

According to one embodiment, the multifrequency device 10 can be installed on a printed circuit board (or PCB for “Printed Circuit Board according to English terminology). The printed circuit board can be a double-sided board. One face of the card can be entirely or partially metallized in order to form a ground plane.

According to one embodiment, the winding L21, L22 of the tuning circuit 14 can be a printed inductance. The inductor L21, L22 can be made in the form of printed turns.

The tuning circuit 14 includes three terminals referenced 141, 142, 143. A first terminal 141 of the tuning circuit 14 is connected to the first conductor 121 connected to the power supply network. A second terminal 142 of the tuning circuit is connected to the first input / output port 131 of the radio frequency module 13 by means of a decoupling capacitor C2. The decoupling capacitor C2 makes it possible to block the propagation of signals of frequency lower than a predetermined frequency, or cut-off frequency, and to authorize the propagation of signals of frequency higher than this predetermined frequency. Advantageously, the value of this capacitor C2 is therefore chosen so as to block the propagation of low frequency electrical supply signals, that is to say those whose frequency is substantially equal to that of the electrical supply network for example 50Hz or 60Hz. For a voltage of 230V, this capacitor C2 can have, for example, a value of 68 pF with an operating voltage substantially equal to 1000V.

The tuning circuit 14 provides a voltage collector for the input / output port 131 of the radiofrequency module 13 to which it is connected and must be referenced to the electrical ground of the multifrequency device 10. In order not to create a short circuit between the second conductor 122 and the electrical ground GND at low frequencies, the third terminal 143 of the tuning circuit 14 is connected to the electrical ground GND of the multifrequency device 10 via a decoupling capacitor C1. Advantageously, the decoupling capacitor C1 makes it possible to avoid the propagation of the supply signals to the electrical ground. For example, the capacitor C1 can have a value of 68pF and an operating voltage substantially equal to 1000V.

The third terminal 143 of the tuning circuit 14 is connected as close as possible to the GND electrical ground. The distance between the connection point and the tuning circuit 14 is less, preferably much less, than a quarter of the wavelength associated with the frequency on which the tuning circuit is tuned. By very lower is meant at least, ten times or even a hundred times, lower.

According to a first embodiment, illustrated in FIG. 2, the tuning circuit 14 comprises a coil or inductance L21 and a capacitor C21 connected in parallel. The second terminal 142 of the tuning circuit 14 is connected to the inductor L21 at a point located between the two ends of the inductor. In this embodiment, the inductor L21 is fictitiously divided into two coupled windings placed in series, the second terminal 142 being connected to the common terminal of these two windings.

FIG. 3 represents a second embodiment of a tuning circuit comprising an inductance L22 and two capacitors C22, C23. The two capacitors are connected in series and the second terminal 142 of the tuning circuit 14 is connected to the common point 25 of these two capacitors.

The multifrequency device 10 comprises a transmission line 15 whose length L15 is substantially equal to a quarter of the wavelength associated with the second frequency. This type of transmission line 15 is generally called quarter-wave line. A first terminal 151 of the tuning circuit 15 is connected to a first end 15a of the transmission line 15, to the second input / output port 132 of the radio frequency module 13 and to the second conductor 122 of the power cable 12 connected to the supply network electrical 11. A second terminal 152 of the tuning circuit 15 is connected to a second end 15b of the transmission line 15 and to the electrical ground GND of the multi-frequency device 10.

The length L15 is measured between the two ends 15a and 15b of the transmission line 15.

For signals having a frequency substantially equal to the second frequency, the quarter-wave line is therefore equivalent to a parallel resonant circuit. This quarter wave line thus forms a second tuning circuit for the multifrequency device. At this frequency, the quarter-wave line therefore has at its first end 151 a very high impedance, theoretically infinite, that is to say an open circuit. For radio signals of frequency substantially equal to this frequency and circulating on the second conductor 122, the propagation therefore takes place directly towards the second input / output port 132 of the radio frequency module 13.

At low frequencies, typically for electrical power signals, the transmission line 15 provides an electrical connection between the first conductor 121 and the electrical ground GND of the multifrequency device 10.

The transmission line 15 therefore forms a tuning circuit for the signals propagating on the second conductor 122. In this embodiment, the first terminal 151 of this tuning circuit 15 is connected at the same time to the first end 15a from the transmission line 15, to the conductor 122 and to the input / output port 132.

In practice, terminal 151 and end 15a can be combined, as can terminal 152 and end 15b.

According to one embodiment, the multi-frequency device 10 can comprise an inductor L connected in series between the second input / output port 132 of the radio frequency module 13 and the first end 151 of the transmission line 15. The multi-frequency device 10 can also include a capacitor C3 connected between the second conductor 122 and the electrical ground GND. Advantageously, the inductance L and the capacitor C3 allow an impedance matching. The value of the inductance L and that of the capacitor C3 are chosen so as to adapt the impedance of the second conductor 122, seen at the second input / output port 132 of the radio frequency module 13, to a value substantially equal to that of l input impedance of this second input / output port 132. The value of this impedance can for example be equal to 50 Ohms. By way of illustration, the inductance L can have a value of 1 nH and the capacitor C3 a value of 0.7 pF.

Similarly, one can imagine a multi-frequency device 10 configured to be connected to a polyphase electrical network, such as a three-phase network, via a mains cable 12 comprising a neutral conductor and several phase conductors. In this case, the device may include several tuning circuits 14, it will include as many tuning circuit (s) as there are phase conductor (s) used to propagate radio frequency signals. Likewise, the multifrequency circuit may include one or more radiofrequency modules 13 in order to have enough input / output port to process the different radiofrequency signals.

Advantageously, the invention allows the reception and / or the emission of radio frequency radio signals between the aerial medium and a multifrequency device 10 connected to an electrical network 11 of alternating supply by means of a mains cable 12 of which at least two conductors play the role of receiving and / or transmitting antennas of indefinite length. It allows, for any transmitter of orders and / or receiver of orders connected to the sector, to receive or transmit orders transmitted by hertzian waves in aerial form using as an antenna for transmission and / or reception an undetermined portion of mains cable 12 in the vicinity of the mains connection point 11.

The invention is particularly interesting in a frequency range above 100 MHz.

FIG. 4 represents an exemplary embodiment of a multifrequency command and / or control device 30, by radio frequency signals according to the invention, configured to command and / or control an electrical load 31 to which it is connected, by example an engine. The multifrequency command and / or control device 30 comprises at least one multifrequency device 10, as defined above and a command and / or control module 32.

The command and / or control module 32 can include a command port 321 connected to the command output 134 of the radio frequency module 13, for example, via a CMD command line.

The control orders generated by the radio frequency module 13 give rise to electrical signals representative of these control orders. These signals are then transmitted to the command and / or control module 32 for example via the command port 321 in order to be processed by the command and / or control module 32. After processing, the command module and / or control generates signals representative of a command of the electric charge which are then transmitted to this electric charge 31. It can be, for example, a motor whose output drives a mobile element when the motor is supplied. These signals can for example be available on a command port 322 of the command and / or control module 32.

The command and / or control module 32 can include a control port 323 connected to an output of the electrical load 31. These input and output are configured to transmit signals representative of state variables in order to control the electrical load 31 connected to the multifrequency command and / or control device 30. As a variant, inputs and outputs are configured to transmit signals representative of state variables in order to control several electrical charges analogous to charge 31 and connected to the device 30.

The various control ports 321, 323 and the control port 322 can be ports of the unidirectional or bidirectional type.

The command and / or control module 32 can be made in a single module configured to implement the two command and control functions or be made in two separate modules each providing a regulation or control function.

The command and / or control module 32 can be connected to the power supply network by an internal phase line PO and by an internal neutral line NO.

By way of illustration, in the exemplary embodiment of FIG. 1, the internal phase line PO is connected to the phase conductor 121 of the power cable via the tuning circuit 14 and the internal neutral line NO is connected to the neutral conductor 122 of the power cable via the transmission line

15.

In the case where the electrical load 31 is a motor comprising first, second and third motor terminals, a control part of the command and / or control module 32 can be formed by a switching unit simply made up of relays making it possible to connect the internal phase line PO and the internal neutral line NO to certain motor terminals. The three motor terminals can be connected to the control port 322 of the command and / or control module 32, for example by means of a cable comprising three conductors, each of the conductors being connected to one of the motor terminals.

In the case where the electrical load 31 is a single-phase induction type motor, the switching unit can be configured to allow connection of the internal phase line PO either to the first motor terminal or to the second motor terminal, depending on the desired direction of rotation, while connecting the third motor terminal to the internal neutral line NO.

In the case where the electric load 31 is a motor of the synchronous autopilot type (or “brushless according to English terminology) the switching unit can comprise a rectifier followed for example by a three-phase inverter whose three outputs are connected to the three motor terminals. The rectifier can also be separated from the switching module.

In the case where the electric charge 31 is a DC type motor with a collector, the third motor terminal does not exist. The switching unit can comprise a rectifier, the two output terminals of which are connected by relay either to the first motor terminal and to the second motor terminal, or by reversing the connection of these two terminals, according to the direction of rotation of the desired motor. .

When the mains cable 12 connected to the command and / or control device is traversed by a current, the tuning circuit 14 is traversed by a current I formed from at least two components. A first component is a low frequency alternating current, for example of frequency 50 Hz or 60 Hz, intended to supply the electrical load 31 connected to the command and control device. Its intensity can be variable depending on the mode of activity of the electrical load, especially when the load is a motor. A second component is a high frequency radiofrequency component corresponding to the radio signals propagating on a conductor 121 of the cable 12 to which the tuning circuit 14 is connected.

Between the first terminal 141 and the third terminal 143 of the tuning circuit 14, the high-frequency radiofrequency component of the current is blocked by the parallel resonant circuit contained in the tuning circuit 14. In addition, due to the connection of the circuit agree 14 to the electrical ground GND, the high frequency radiofrequency component sampled from the parallel resonant circuit at the level of the second terminal 142 is not disturbed by the consumption of the connected electrical charge 31, such as for example a motor whose l intensity is variable according to its mode of activity.

Embodiments of the tuning circuit 14 other than those presented in FIGS. 2 and 3 are possible within the framework of the invention, provided that the tuning circuit 14 can be directly crossed by the low frequency component of the current and that it blocks the propagation of the high frequency radiofrequency component within the current intended to supply the electric charge.

The multifrequency command and / or control device 30 is presented above through an example of application to the command and / or control of an engine. This example is by no means limiting. The device 30 can be associated with other electrical charges, such as a lighting system, a heating control system, an alarm system, a video system, etc.

FIG. 5 represents an exemplary embodiment of a multi-frequency system 40 according to the invention. This system can, for example, form all or part of a home automation installation.

The system 40 comprises a group of at least one home automation device 41 configured to be connected, by a mains cable 12 comprising at least two conductors of the type of the conductors 121, 122 visible in FIG. 1, to a power supply network 11 and to be controlled and / or regulated by radio frequency signals.

The home automation equipment 41 can be an actuator arranged to move or adjust an element of a building, for example an actuator to move a roller shutter or a blind, a control system for a heating or a ventilation system. Home automation equipment can also be lighting, for example interior or exterior lighting such as patio lighting, a lighting control system, an alarm system, a video camera, in particular a video surveillance camera, etc.

The home automation equipment 41 comprises a multifrequency command and / or control device 30 as described above.

The system 40 also comprises one or more remote control and / or control devices 42 comprising a radio frequency module 421 configured to cooperate with at least one multifrequency device 10 from the group of at least one home automation equipment 41, in order to control it and / or control it.

The remote control and / or control device 42 can be an order transmitter comprising for example a control keyboard 422 and a radio frequency module 421, such as a radio frequency transmitter.

It can also be a sensor, for example configured to regulate a state variable such as temperature, light intensity, pressure, etc., a presence detection sensor, meteorological detection, quality of air or alarm. These different types of sensor can be assimilated to remote control and / or control devices 42, even if they only transmit signals representative of measurement data.

The radiofrequency module 421 can be a unidirectional module configured to transmit only, a bidirectional module configured to transmit and receive radiofrequency signals or a mixed module comprising for example several channels, certain channels being configured to transmit radiofrequency signals and other channels only being configured to both transmit and receive radio frequency signals.

With reference to FIG. 5, the remote control and / or control device 42 communicates via radio frequency signals with home automation equipment 41. It can be an actuator comprising a motor.

The control keyboard 422 of the remote control and / or control device 42 comprises control keys. Depending on the key activated, the radio frequency module 421 emits radio frequency signals representative of a control order, for example a movement order in a first direction, a movement order in a second direction, a stop order. The command and / or control device 30 of the home automation equipment 41 receives the signals representative of the orders emitted by the remote command and / or control device 42 and transforms them if necessary into engine control orders of the electric load actuator 31.

The output of the actuator is connected to a mobile element which can move in several directions depending on the command applied to the motor. The mobile element can be installed in or around a building and move in a space of the building, for example in front of a bay, on a terrace, etc. It can act for example of a shutter, a blind, a garage door, a gate ...

The home automation equipment 41 and the remote control and / or control devices 42 can be of the unidirectional type, that is to say ensuring only the reception function or ensuring only the transmission function or of the bidirectional type c ' that is to say ensuring the two transmission and reception functions.

By way of example, a remote command and / or control device 42 can emit radio frequency signals representative of a command, for example the lifting of blinds. Upon reception, the multifrequency command and / or control device 30 processes these radiofrequency signals and delivers control signals towards the connected electrical load 31 in order to execute the requested command. In return, the multifrequency command and / or control device 30 can transmit radio frequency signals towards the remote command and / or control device 42. These signals can for example be signals representative of an “acknowledgment of receipt ”To confirm that the order has been received. It can also be signals representative of a message confirming the successful execution of the command, for example when the blind is raised.

Different examples of uses of the multifrequency device 10 and of the command and / or control device 30 by radio frequency signals are presented below.

Depending on the country, home automation equipment 41 controllable and / or remotely controllable by means of radio frequency signals does not all operate on the same frequency. This forces manufacturers to develop and manufacture multifrequency devices and command and / or control devices using different radio frequency signals. Advantageously, the present invention can make it possible to simplify, for example, the design of these devices, as well as the management of stocks.

As stated above, due to its design, the radio frequency module 13 is capable of transmitting and / or receiving radio frequency signals on several frequencies of different values, for example on an integer n of frequencies with n greater than or equal to two. According to a first mode of use of the device 30 for command and / or control by radiofrequency signals, the radiofrequency module 13 can be configured to transmit and / or receive radiofrequency signals on a number of frequencies strictly less than n.

By way of non-limiting example, the radiofrequency module 13 can be a dual-frequency module capable of receiving or transmitting and receiving radiofrequency signals on the frequencies of 868 MHz and 2.4 GHz. Before being mounted in home automation equipment 41, the radio frequency module 13 can be configured to operate on only one of these two frequencies corresponding to a frequency used in the country or countries of destination. This configuration can for example be carried out during the programming of the radio frequency module 13. These frequency values are in no way limiting and other frequencies can be used such as for example the frequency of 433 MHz.

Thus, the manufacturer is no longer obliged to design as many multifrequency devices as there are frequencies of use, a single device making it possible to cover all the possible frequencies. Likewise, the same assembly line allows all home automation equipment to be assembled, regardless of the country of destination.

According to a variant use of the device 30 for controlling and / or monitoring by radiofrequency signals according to the invention, the radiofrequency module 13 can be configured to transmit and / or receive radiofrequency signals on n frequencies, with an integer n greater than or equal to two. Home automation equipment can, for example, be configured to be controllable from two types of radiofrequency signals of different frequencies. It may for example be a gate, garage door or roller shutter actuator controllable by a remote control device such as a remote control transmitting on a first frequency or a mobile telephone application remote control transmitting on this first frequency . In the event of strong electromagnetic disturbances around this first frequency, the remote control may have difficulty controlling the actuator. This can be the case with the 2.4 GHz frequency which is also used for other applications such as for example Wi-Fi. In this case, the user can use a second remote control device, such as a second remote control, transmitting on a second frequency or another channel of the same remote control device, if it is multi-frequency. The command and / or control device 30 can therefore be controlled on two separate frequencies, as required.

This multifrequency control device 40 can also find utility in the case where the range of the remote control device becomes insufficient to control home automation equipment remotely on a first frequency. In this case, the user can use another remote control device or another channel operating on a second frequency of higher range of the same remote control device.

Such a multifrequency command and / or control device 30 can be used in home automation equipment 41, a first frequency being used to control the home automation equipment remotely and a second frequency being used to control the equipment remotely. To do this, the radio frequency module 13 can comprise a first input / output port operating only in reception or in transmission / reception in order to provide the remote control function and a second input / output port of the bidirectional type for regulating the home automation equipment. 41 in which the device 30 is mounted.

According to another mode of use, home automation equipment 41 in which a multifrequency command and / or control device 30 is installed can communicate on several frequencies for redundancy and / or security needs. Such a mode of use can, for example, find its utility in a multi-frequency alarm system 5 connected to the electrical network.

The different non-incompatible embodiments and variants defined above can be combined to generate new embodiments of the invention.

Claims (15)

1.- Multifrequency device (10) configured to be connected by at least first and second conductors (121, 122) to an electrical supply network (11), the device (10) being characterized in that it comprises : - at least one radio frequency module (13) comprising at least first and second input / output ports (131, 132), the first input / output port (131) being capable of transmitting and / or receiving radio frequency signals on a first frequency, the second input / output port (132) being capable of transmitting and / or receiving radiofrequency signals on a second frequency distinct from the first frequency, - at least a first and a second tuning circuit (14, 15) configured to block the propagation of radiofrequency signals propagating respectively over the first and the second conductor (121, 122), each tuning circuit comprising a plurality of terminals, - a terminal (141, 151) of each tuning circuit being connected respectively to the first conductor (121) or to the second conductor (122), a terminal (142, 151) of each tuning circuit being connected respectively to the first input / output port (131) or to the second input / output port (132) of the radio frequency module (13), - decoupling means (C1, C2) configured to stop the propagation of electrical supply signals between the first and second conductors (121, 122) and between at least one conductor (121, 122) and an input / output port ( 131, 132) of the radio frequency module (13). 2, - Device (10) according to the preceding claim wherein the first tuning circuit (14) comprises at least three terminals (141, 142, 143), a first terminal (141) of the first tuning circuit being connected to the first conductor (121), a second terminal (142) of the first tuning circuit being connected to the first input / output port (131) of the radio frequency module (13) via a decoupling capacitor (C2) and a third terminal (143) of the first tuning circuit of the tuning circuit (14) being connected to an electrical ground (GND) of the multi-frequency device (10) via a decoupling capacitor (C1). 3. - Radio frequency device according to claim 2 wherein the first tuning circuit (14) comprises, between the first and third terminals (141, 143), an inductor (L21) mounted in parallel with a capacitor (C21), the second terminal (142) of the first tuning circuit (14) being connected at a point of the inductor (L21) located between its two ends. 4, - Device (10) according to claim 2 wherein the first tuning circuit (14) comprises, between the first and third terminals (141, 143), an inductor (L22) mounted in parallel with two capacitors (C22, C23) connected in series, the second terminal (142) of the first tuning circuit (14) being connected to the terminal common to the two capacitors (C22, C23). 5. - Device (10) according to one of the preceding claims wherein the second tuning circuit is formed by a transmission line (15) whose length (L15) is substantially equal to a quarter of the wavelength associated with the second frequency, a first terminal (151) of the second circuit being connected at a first end (15a) of the transmission line (15) to the second conductor (122) and to the second input / output port (132) of the radio frequency module (13 ) while a second terminal (152) of the tuning circuit is connected to a second end (15b) of the transmission line (15) and to the electrical ground (GND) of the multi-frequency circuit (10). 6. - Device (10) according to the preceding claim wherein the first end (15a) of the transmission line (15) is connected to the second input / output port (132) of the radio frequency module (13) through an impedance matching circuit (L, C3) configured to adapt the impedance of the second conductor (122) to a value substantially equal to the input impedance of the second input / output port (132) of the radio frequency module ( 13). 7. - Device (10) according to one of the preceding claims wherein the first tuning circuit (14) is also configured to adapt the impedance of the first conductor (121) to a value substantially equal to the impedance of input of the first input / output port (131) of the radio frequency module (13). 8. - Device (10) according to one of the preceding claims wherein the first tuning circuit (14) comprises an inductor (L21, L22) produced in the form of printed turns. 9. - Device (10) according to one of the preceding claims wherein the radiofrequency module (13) is configured to transmit and / or receive radiofrequency signals on a single frequency. 10. - Device (10) according to one of claims 1 to 8 wherein the radiofrequency module (13) is configured to transmit and / or receive radiofrequency signals on at least two frequencies. 11. - Device (10) according to one of the preceding claims wherein the first and second conductors (121, 122), connected to the power supply network (11) are respectively a phase conductor and a neutral conductor. 12. - Device (10) according to one of the preceding claims in which one of the conductors, connected to the power supply network, is an earth conductor. 13. - Device (30) for command and / or control by radio frequency signals configured to supply at least one electrical charge (31), the command and / or control device (30) being characterized in that it comprises at at least one multi-frequency device (10) according to one of the preceding claims and a command and / or control module (32). 14. - Home automation equipment (41) configured to be controlled and / or regulated by radio frequency signals, the home automation equipment (41) being characterized in that it comprises a device (30) for command and / or control by signals radiofrequencies according to the preceding claim intended to command and / or control an electric charge (31) also belonging to the home automation equipment. 15. - Multifrequency system (40) comprising a group of at least one home automation equipment (41) according to the preceding claim and a group of at least one device (42) for remote control and / or control, the multifrequency system (40) being characterized in that the group of at least one remote control and / or control device (42) comprises a radio frequency module (421) configured to cooperate with at least one multifrequency device (10) of the group d '' at least one home automation equipment (41), in order to command and / or control it. 1/2